Каталог стандартов

+7 (495) 223-46-76 +7 (812) 309-78-59
inform@normdocs.ru

ASTM A640-97(2002)e1

Заменен
Standard Specification for Zinc-Coated Steel Strand for Messenger Support of Figure 8 Cable — 3 стр.
Реферат

This specification covers two sizes of extra-high-strength grade of concentric-lay steel wire strand, composed of seven, zinc-coated steel wires, specifically intended for use as the supporting messenger in Figure 8-type communication and electrical cables. Steel wires shall be manufactured by the open-hearth, basic-oxygen, or electric-furnace process. Materials shall adhere to specified mechanical and physical requirements such as breaking strength, elongation, ductility, nominal diameter, and coating weight and adherence. Zinc coatings shall be continuous and of reasonably uniform thickness, and wires shall be free from imperfections not consistent with good commercial practice.

Область применения

1.1 This specification covers two sizes of extra-high-strength grade of concentric-lay steel wire strand, composed of seven, zinc-coated steel wires, specifically intended for use as the supporting messenger in Figure 8-type communication and electrical cables.

1.2 The values stated in inch-pound units are to be regarded as the standard.

ICS
77.140.65 Steel wire, wire ropes and link chains / Стальная проволока, проволочные канаты и звеньевые цепи
Сборник ASTM
01.06 Coated Steel Products / Изделия из облицовочной стали
Тематика
Steel--Structural, Tubes, Plate, Coated